Damage Assessment of High-strength Concrete Beam Based on Vibration Eigenvalues
High-strength concrete beam structures have been widely used in engineering due to their large span,lightweight,and high-strength advantages.Damage assessment of their structures can help improve their durability and safety.Therefore,this article proposes a method for damage assessment of high-strength concrete beams,which determines the location and severity of structural damage based on sensitivity analysis of the vibration characteristic values of the beam structure;to further improve computational efficiency and evaluation accuracy,the subspace iteration method is used to calculate the sensitivity of multiple order eigenvalues at once,and an additional mass system is used to obtain more eigenvalue sensitivity equations.The multiple singular value truncation method is used to solve the damage parameters;finally,taking the high-strength concrete beam structure as an example,the accuracy and feasibility of the aforementioned evaluation method were verified.The results indicate that the damage assessment method proposed in this article can accurately identify the location and severity of damage in high-strength concrete beams.
万方数据
维普
